optique fiber simmulations

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OptiFDTD
Finite-Difference Time-Domain Simulation Design Software

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OptiFDTD Finite-Difference Time-Domain Simulation Design Software
Overview
OptiFDTD is a powerful, highly integrated and user-
friendly software application that enables the computer-
aided design and simulation of advanced passive and
non-linear photonic components. OptiFDTD enables
you to design, analyze and test modern passive and
nonlinear photonic components for wave propagation,
scattering, reflection, diffraction, polarization and the
nonlinear phenomenon. The core program of OptiFDTD
is based on the finite-difference time-domain (FDTD)
algorithm with second-order numerical accuracy and
the most advanced boundary condition - Uniaxial
perfectly matched layer (UPML) boundary condition.
The algorithm solves both electric and magnetic fields
in temporal and spatial domain using the full-vector
differential form of Maxwell’s coupled curl equations.
This allows for arbitrary model geometries and places no
restriction on the material properties of the devices.
The automation of these processes dramatically improves
productivity of design engineers and reduces time-to-
market for the product. This, along with integration with
other Optiwave photonic design automation software, all
contributes to quicker return on investment and shorter
pay-back period.
Specific Benefits
• Presents global overview of photonics problems
• Provides broad material choice
• Offers extensive excitation selection
• Delivers powerful Post-Data Processing
Applications
OptiFDTD enables the simulation of:
• Photonic band gap materials and devices
• Optical micro-ring filters and resonators
• Grating-based waveguide structures
• Diffractive micro-optics elements
• Complex integrated optics structures
• Nonlinear materials, dispersive materials, surface
plasma and anisotropic materials

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Total Field Scattering Field (TF/SF)
Introducing a new arbitrary tilting plane wave excitation
algorithm that separates total field and scattering field.
Ideal for Radar Cross Section (RCS) analysis and grating
simulations.
OptiFDTD Finite-Difference Time-Domain Simulation Design Software
• Photonic surface plasmon and surface plasma wave
• Nano-partical, cells, tissue and lens
• Electromagnetic phenomena
NEW FEATURES IN OPTIFDTD
The latest version of OptiFDTD delivers
the power of 64-bit computing to
desktops supporting Windows XP 64-bit and Windows
Vista 64-bit operating systems.
Next Generation Simulation Engine
With the 64-bit features of OptiFDTD, users can design
and run a new generation of 64-bit simulations that
address up to four billion times as much memory as 32-bit
applications.
As engineers tackle larger, more complex real-world
problems in their designs, sufficient memory becomes
crucial. 64-bit operating systems can utilize 16 TB
(Terabytes) of RAM. A 32-bit system can only handle a
maximum of 4 GB of RAM, severely limiting the amount of
accessible memory in an existing system.
Heating Absorption Module
Metallic and lossy materials in semiconductor devices or
solar cells absorb part of the wave energy and convert
it to heat. The advanced heating absorption module in
OptiFDTD 8.0 supports calculations of the heating field
distribution and heating absorption rate estimation.

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Initial Phase of the Plane Input Wave
A new feature enabling users to select the initial phase
offset of a launched input wave. A practical application
when analyzing combined signals from multiple input
planes.
Key Features and functionality
OptiFDTD has the most extensive material
choices, including
• Lossless and lossy materials
• Isotropic and anisotropic materials
• Multiple resonance dispersive materials
• Lorentz-Drude materials - Noble metals and surface
plasma materials
• 2nd-Order and 3rd-Order nonlinear materials
• Kerr effect materials
• Raman effect materials
•Perfect conductor materials
OptiFDTD has the most extensive selection of
excitation sources, including
• Waveguide mode excitation
• Gaussian beam excitation
• Plane wave excitation
• Point source and Dipole Source
• Single wavelength excitation
• TF/SF excitation
• Spectral excitation
• Power and amplitude
• Linear or circular polarization
• Multiple beam excitations
Finite-Difference Time-Domain Simulation Design SoftwareOptiFDTD

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Advanced Boundary Condition
OptiFDTD includes an advanced boundary condition
simulation feature which optimizes memory usage and
provides more accurate results. Using the Uniaxial
Perfectly Matched Layer (UPML) method to calculate
the absorbing boundary condition in comparison with
conventional PML
The periodic boundary condition, Perfect Electric
Conductor (PEC) and Perfect Magnetic Conductor
(PMC) boundary conditions can be used with UPML
to realize more advanced simulations for periodic and
symmetric layouts.
Robust Photonic Crystal Editor
Included with OptiFDTD is a robust photonic crystal
editor allowing users to edit any lattice structure and
periodic layout with a number of template shapes (i.e.
Atom Waveguides). Editing features have also been
improved, including user-defined shape creation and
structure rotation.
Simulation Automation through Scripting
A powerful feature empowers users with full simulation
engine automation through Visual Basic scripting.
Completely integrated with the graphical user interface,
the flexible scripting tools allow for a streamlined
automation process:
• Quickly and easily convert any layout design or its parts
into the script.
• Create custom libraries of scripts that represent
particular components, which can be added to any new
layout design.
• Easily create the most complex design without manual
graphical user interface operations.
• Optimize your simulation with comprehensive post-
processing tools.
OptiFDTD Finite-Difference Time-Domain Simulation Design Software

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FDTD Band solver
A fully integrated 2D band solver is based on the FDTD
method with Bloch’s periodic boundary condition, and
can generate the band diagram based on the reduced
simulation domain of single or multiple cells from a square
or hexagonal lattice.
Waveguide thickness tapering options
Waveguides can now be tapered in thickness in addition
to width. Channel waveguides can be tapered linearly, and
fibers can be tapered linearly and proportionately. With
3D fiber profiles, the width of the 2D waveguide in the x-z
plane is also applied to the height, in order to model fiber
tapering. As the dimensions change in y, the position of
the center line of the fiber in 3D space is maintained.
Post Data Analysis
OptiFDTD has the strongest post-data analysis tools
available. Options include, Discrete Fourier Transform
Field Distribution in Domain, Poynting Vector in Domain,
Polarized Power calculation, and Overlap Integral
calculation.
Finite-Difference Time-Domain Simulation Design SoftwareOptiFDTD
Lorentz-Drude model
A Lorentz-Drude model for metallic integrated photonic
circuits. This advanced materials model will allow users
to perform more accurate, truly full-wave simulations for
metallic structures – another “industry first” captured by
OptiFDTD.
PWE band solver
A new band solver based on plane wave expansion
(PWE) method will enable customers to analyze
properties of photonic crystal materials and devices in all
three dimensions.
“We are using OptiFDTD to perform 2D and 3D
simulations of CMOS image sensor pixels to evaluate
their optical efficiency. OptiFDTD is a very versatile
simulation tool and we have been very impressed
with the technical support we have received from
Optiwave.”
Dr. Peter Catrysse
Dept. of Electrical Engineering, Stanford University